Greetings fellow listmembers,
The following announcement isn't strictly for an "isotope position,"
but there are enough biogeochemists on the list that I thought it was worth
posting anyways. My apologies if I have offended!
Christina De La Rocha
Department of Geology and Geophysics
Subject: Post-Doctoral Position, available for 3 years, starting March 98,
funded by the European Commission (project SINOPS : SIlicoN cycling in the
world ocean: the controls for Opal Preservation in the Sediment as derived
from observations and modelling
Location : European Institute for marine Studies, Brest (France)
Field: Marine Biogeochemistry
Key words: Global Biogeochemical Cycles, Data base, global modelling
Description of the SINOPS project:
Within the framework of SINOPS (SIlicoN cycling in the world ocean: the
controls for Opal Preservation in the Sediment as derived from observations
and modelling), a project funded by the European Commission (MAST III, N°
PL961148), the laboratory « BIOFLUX » (UMR CNRS 6539, European Institute
for Marine Studies, located in Brest, France, and directed by Professor P.
Treguer,) is offering a post-doctoral position for a period of 3 years,
starting in early spring 1998.
This project is coordinated by E. Meier-Reimer and C. Heinze, from the Max
Planck Institut fur Meteorologie located in Hamburg (Germany). This project
represents the association of this modelling group specializing in global
biogeochemical cycling and paleoclimatology with our group working in the
field on the silicon cycling in the modern ocean. The main objectives of
this project are:
(1) To provide a data base of observations and a general circulation model
which allow comprehensive studies of the silicon cycling in the oceans,
(2) To reproduce the first principles of silicon cycling in today’s world
ocean by use of an ocean general circulation model (OGCM),
(3) To offer an explanation for the present opaline sedimentary distribution,
(4) To test our improved understanding of the opal sedimentary record by a
paleoceanographic application of the model and compare the simulations with
the observed sediment record.
Following the OPALEO (on the use of OPAL as a PALEO-productivity tool)
workshop held in Brest in June 1996 (Ragueneau et al., 1996, EOS 77/49, p
491,493), the necessity of local and more conceptual models for opal
preservation within the water column and the bioturbated sediment, as well
as global large scale model approaches for concrete climate change
applications became obvious, because the interpretation of the observed
data sets and experiments is not straightforward. The growing observed Si
data base and the stock of already existing modeling expertise should make
a successful combination of observed data and models feasible. The 4 goals
identified above will be achived by applying the following methodology:
A. summarizing all existing observed Si and opal data in a combined
data set which allows systematic statistical and analytical evaluation,
B. provide a first coupled three-dimensional ocean-sediment model
including opal on the basis of an OGCM velocity field which allows
realistic regional resolution of large scale oceanic tracer fields,
C. use both tools to systematically diagnose model deficiencies and
try to remove disagreements between model and observations for the present ocean
by the development of new parametrizations of processes,
D. test our improved understanding by applying the model for a
reproduction of major observational evidence from the last glacial and the
Description of the position:
Basically, steps A and B are to be achieved within the first half of the
project (1,5 year), task A being carried out by our group and task B by the
Hamburg group. The second half of the project is devoted to the improvement
of the model through strong interactions between the two partners and to
the paleoceanographic applications of the OGCM.
To provide the extensive Si data base, our group has been funded for an
engineer position (2 years) and a post-doctoral position (3 years). The
engineer will be in charge of the development of the data base (creating
the archive and the extraction softwares). The post-doctoral position is
devoted first to the collection of the data and the survey of the data base
creation (task A) and then to a collaborative work with the Max Planck
Institute for the optimization of the OGCM and the paleoceanographic
applications (tasks C and D).
Therefore, we are looking for a scientist who has done his/her Ph.D. in the
field of marine biogeochemical cycles and who has a strong attirance for
modelling at the global scale. Clearly, the model is NOT developed in our
laboratory. By modelling, we do not mean encoding but being able to make
the link between model outputs/parametrization and observable data
sets/experimentally measured parameters.
In addition, this person should like travelling and working in
collaboration with several teams. The one located at the Max Planck
Institute of course, but also the teams which will provide the existing
data that will feed the Si data base.
How to proceed if interested:
Any person interested in this offer should send as soon as possible a
detailed resume of his/her cursus to the following E-mail address:
[log in to unmask]
Any document sent through the E-mail should be doubled by a letter using
the current mail, to the adress indicated at the bottom of this message.
The dead line for the application is January 31 1998.
Thank you in advance for your interest in this position. Looking forward to
reading from you soon,